有关字符串例题

var a= "abcdefg";
console.log(a.split("").reverse().join(""))  //gfedcba

var str = "http://www.baidu.com?name=zs&id=100&desc=很帅"
var person = {};
var arr = str.split("?")[1].split("&");
arr.forEach(function(ele,index,arr){
  person[ele.split("=")[0]]=ele.split("=")[1];
})
console.log(person) //{name: "zs", id: "100", desc: "很帅"}

var obj = {
  name:"zs",
  id:100
}
var str = "http://www.baidu.com";
var arr = [];
for (var key in obj) {
  arr1.push(key+"="+obj[key]);
}
console.log(str + "?" + arr.join("&"))

var str = "get-element-by-id";
function hump(str){
   var arr = str.split("-");
   var firstChar = "";

for(var i=1;i<arr.length;i++){
     firstChar = arr[i].charAt(0).toUpperCase();//charAt()返回指定位置的字符
     // console.log(firstChar)
     arr[i] = firstChar + arr[i].substr(1,arr[i].length-1);
  }
  return arr.join("");
}
console.log(hump(str))